Outdoor space heater



FIG. 1 is a perspective view of an outdoor space heater showing my new design;

FIG. 2 is a front view thereof;

FIG. 3 is a rear view thereof;

FIG. 4 is a left side view thereof;

FIG. 5 is a right side view thereof; and,

FIG. 6 is a top view thereof.

The broken lines shown in the figures depict portions of the outdoor space heater that form no part of the claimed design. 

CLAIM The ornamental design for an outdoor space heater, as shown and described. 